Makefile fixes for non GNU systems

* Move `Makefile` to `GNUmakefile`, which GNU `make` picks first
* Add `Makefile` so other `make`s forward to `gmake`
* Set the `SHELL` variable and let `make` handle the shell

Signed-off-by: Olivier Mehani <shtrom@ssji.net>

GNUmakefile

@@ -0,0 +1,53 @@
+SHELL=bash
+TMP_FOLDER=/tmp
+RELEASE_FOLDER=wllbg-release
+
+ENV ?= prod
+
+help: ## Display this help menu
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+clean: ## Clear the application cache
+	rm -rf var/cache/*
+
+install: ## Install wallabag with the latest version
+	@./scripts/install.sh $(ENV)
+
+update: ## Update the wallabag installation to the latest version
+	@./scripts/update.sh $(ENV)
+
+dev: ## Install the latest dev version
+	@./scripts/dev.sh
+
+run: ## Run the wallabag built-in server
+	@php bin/console server:run --env=dev
+
+build: ## Run webpack
+	@npm run build:$(ENV)
+
+prepare: clean ## Prepare database for testsuite
+ifdef DB
+	cp app/config/tests/parameters_test.$(DB).yml app/config/parameters_test.yml
+endif
+	-php bin/console doctrine:database:drop --force --env=test
+	php bin/console doctrine:database:create --env=test
+	php bin/console doctrine:migrations:migrate --no-interaction --env=test
+
+fixtures: ## Load fixtures into database
+	php bin/console doctrine:fixtures:load --no-interaction --env=test
+
+test: prepare fixtures ## Launch wallabag testsuite
+	bin/simple-phpunit -v
+
+release: ## Create a package. Need a VERSION parameter (eg: `make release VERSION=master`).
+ifndef VERSION
+	$(error VERSION is not set)
+endif
+	@./scripts/release.sh $(VERSION) $(TMP_FOLDER) $(RELEASE_FOLDER) $(ENV)
+
+deploy: ## Deploy wallabag
+	@bundle exec cap staging deploy
+
+.PHONY: help clean prepare install fixtures update build test release deploy run dev
+
+.DEFAULT_GOAL := install

Makefile

@@ -1,52 +1,2 @@
-TMP_FOLDER=/tmp
-RELEASE_FOLDER=wllbg-release
-
-ENV ?= prod
-
-help: ## Display this help menu
-	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
-
-clean: ## Clear the application cache
-	rm -rf var/cache/*
-
-install: ## Install wallabag with the latest version
-	@sh scripts/install.sh $(ENV)
-
-update: ## Update the wallabag installation to the latest version
-	@sh scripts/update.sh $(ENV)
-
-dev: ## Install the latest dev version
-	@sh scripts/dev.sh
-
-run: ## Run the wallabag built-in server
-	@php bin/console server:run --env=dev
-
-build: ## Run webpack
-	@npm run build:$(ENV)
-
-prepare: clean ## Prepare database for testsuite
-ifdef DB
-	cp app/config/tests/parameters_test.$(DB).yml app/config/parameters_test.yml
-endif
-	-php bin/console doctrine:database:drop --force --env=test
-	php bin/console doctrine:database:create --env=test
-	php bin/console doctrine:migrations:migrate --no-interaction --env=test
-
-fixtures: ## Load fixtures into database
-	php bin/console doctrine:fixtures:load --no-interaction --env=test
-
-test: prepare fixtures ## Launch wallabag testsuite
-	bin/simple-phpunit -v
-
-release: ## Create a package. Need a VERSION parameter (eg: `make release VERSION=master`).
-ifndef VERSION
-	$(error VERSION is not set)
-endif
-	@sh scripts/release.sh $(VERSION) $(TMP_FOLDER) $(RELEASE_FOLDER) $(ENV)
-
-deploy: ## Deploy wallabag
-	@bundle exec cap staging deploy
-
-.PHONY: help clean prepare install fixtures update build test release deploy run dev
-
-.DEFAULT_GOAL := install
+.DEFAULT:
+	gmake $@